Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations

Takahiro Chiba; Michael Schreier; Gerrit E. W. Bauer; Saburo Takahashi

doi:10.1063/1.4913632

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arXiv · 1409.8406

Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations

Takahiro Chiba·Michael Schreier·Gerrit E. W. Bauer·Saburo Takahashi

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Abstract

The spin-torque ferromagnetic resonance (ST-FMR) in a bilayer system consisting of a magnetic insulator such as Y3Fe5O12 and a normal metal with spin-orbit interaction such as Pt is addressed theoretically. We model the ST-FMR for all magnetization directions and in the presence of field-like spin-orbit torques based on the drift-diffusion spin model and quantum mechanical boundary conditions. ST-FMR experiments may expose crucial information about the spin-orbit coupling between currents and magnetization in the bilayers.

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Takahiro Chiba, Michael Schreier, Gerrit E. W. Bauer, Saburo Takahashi. 2015-02-28. Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations. https://doi.org/10.1063/1.4913632

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